• Journal of the Ergonomics Society of Korea
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• v.25 no.1
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• pp.7-16
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• 2006

• The Bimonthly Magazine for Agrochemicals and Plant Protection
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• v.2 no.11
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• pp.85-90
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• 1981

최근 농약사용에 관하여 많은 논의가 있으나 병충해방제를 전적으로 농약에 의존하는 것이나 또는 농약의 사용을 전적으로 부정하는 것 등 극한적인 평가자세는 농약에 대한 올바른 평가가 될 수 없다. 대부분의 농약은 원래 독성이 있는 것이며 또 독성이 있기 때문에 효과를 나타내는 것이다. 지금까지 경험적으로 밖에는 알지 못하였던 살균제의 작용기구 분야에도 많은 연구가 있어 점차 그 내용이 밝혀지고 있으며 이 내용을 다소나마 이해한다는 것은 살균제의 올바른 사용을 위해서도 필요하다. 본지에서는 농약 안전사용에 관련하여 살충제에이어 살균제의 사용기구와 사용시 주의점에 관해 앞으로 몇회에 걸쳐 연재할 계획이다. 관심있는 독자에게 많은 참고자료가 되기를 바란다.

• KAPE Magazine
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• s.207
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• pp.10-11
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• 2013

국내산 오리고기의 차별화를 위해 가금류에 대한 원산지 표시가 의무화 되어 있지만 생산에서 소비까지 품질관리가 업체 자율에 맡겨져 있어 소비자가 믿고 구매할 수 있는 시스템이 아직 미흡한 단계다. 이에 축산물품질평가원에서는 '오리고기 등급판정'을 지난 2011년 11월 21일부터 시범사업으로 시작해 2012년 7월 1일부터 본격적으로 사업을 실시하여 오리고기 제품에 품질등급 및 등급판정일자를 표시토록하고 품질공정관리를 통해 수시 모니터링을 하여 소비자가 안심하고 오리고기를 구입할 수 있도록 하고 있다. 자세한 내용은 지난 10월에서 소개한 바 있다. 그렇다면 우리 식탁에 올라오는 등급판정 받은 오리고기의 등급판정 과정을 어떻게 될까? 이번 11 월호에는 그 과정을 따라가 보자.

• Journal of the Korean Society for Nondestructive Testing
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• v.34 no.1
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• pp.68-76
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• 2014

최근 들어 급격히 발전한 테라헤르츠파 발생/검출 기술에 힘입어 생명, 화학, 기계, 통신 등의 다양한 분야에서 THz 관련 응용 연구가 진행되고 있다. 본 강좌에서는 최신 THz 발생/검출 기술을 분야별로 살펴보고 바이오, 재료, 기계 분야의 비접촉식 비파괴검사 분야에 적용 개발되고 있는 THz 기술에 대하여 기술하고자 한다. 특히, 구조물의 THz 비파괴검사 평가 분야 세부 기술에 대하여 자세하게 소개한다.

• 한국문헌정보학회 학술발표논집
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• 2004.04a
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• pp.91-118
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• 2004

어린이에게 좋은 도서를 제공할 의무와 책임을 지고 있는 대표적인 기관은 도서관이다. 사서는 어린이를 위한 좋은 도서에 대한 정보를 요구하는 개인이나 단체를 위하여 상담과 조언을 할 수 있어야 한다. 그러나 현실적으로 출판물의 양적인 측면을 고려하면 사서가 어린이의 발달 단계에 적합하면서 좋은 책의 기준도 충족시키는 도서들을 선정하는 작업은 간단한 일이 아니다. 이상적인 관점에서 본다면, 도서를 선정하는 사서가 구입할 모든 책을 좋은 책의 평가 기준에 근거해서 살펴보는 것이 이상적이지만 한정된 시간 내에 모든 책을 자세하게 살펴보고 평가하는 일은 실제 업무상황을 고려할 때 거의 불가능한 일이다. (중략)

• Proceedings of the Korean Society for Information Management Conference
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• 2001.08a
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• pp.207-212
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• 2001

대학도서관 웹사이트는 도서관의 이용을 원활하게 하고 정보자료에의 접근을 용이하게 하기 위해서 구성된다. 따라서, 웹사이트를 통해 도서관 서비스에 대한 안내, 이용자의 편의를 위한 온라인 참고봉사 서비스, 과거 수동적인 자세가 아닌 능동적인 정보제공서비스 뿐만 아니라 다양한 이용자의 사용행태를 파악하여 이를 통해서 서비스의 질을 높이고, 이용자의 요구사항을 파악하여 도서관 서비스를 개선해나가는 것이 중요한 화두가 되고 있다. 본 연구에서는 충남대학교 도서관 웹사이트를 대상으로 설문조사(Questionnaire)와 발견적 평가(Heuristic Evaluation)를 통해서 대학도서관 웹사이트의 사용성에 있어서의 문제점을 발견하고 개선점을 제시한다.

• The Journal of Korean Society for Radiation Therapy
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• v.20 no.1
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• pp.37-43
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• 2008

Purpose: To evaluate dosimetry results of three different techniques for whole breast irradiation after conservative surgery of large pendulous breast patient. Materials and Methods: Planning computed tomography (CT) scans for three techniques were performed on a GE Hi-speed advantage CT scanner in the supine (SP), supine with breast supporting Device (SD) and prone position on a custom prone mattress (PP). Computed tomography images were acquired at 5 mm thickness. The clinical target volumes (CTV), ipsilateral lung and heart were delineated to evaluate the dose statistic, and all techniques were planned with the tangential photon beams (Pinnacle$^3$, Philips Medical System, USA). The prescribed dose was 50 Gy delivered in 25 fractions. To evaluate the dose coverage for CTV, we analysed percent volume of CTV receiving minimum of 95%, 100%, 105%, and 110% of prescription dose ($V_{95}$, $V_{100}$, $V_{105}$, and $V_{110}$) and minimal dose covering 95% ($D_{95}$) of CTV. The dosimetric comparison for heart and ipsilateral lung was analysed using the minimal dose covering 5% of each organs ($D_5$) and the volume that received >18 Gy for the heart and >20 Gy for the ipsilateral lung. Results: Target volume coverage ($V_{95}$ and $V_{100}$) was not significantly different for all technique. The V105 was lower for PP (1.2% vs. 4.4% for SP, 11.1% for SD). Minimal dose covering 95% ($D_{95}$) of target was 47.5 Gy, 47.7 Gy and 48 Gy for SP, SD and PP. The volume of ipsilateral lung received >20 Gy was 21.7%, 11.6% and 4.9% for SP, SD and PP. The volume of heart received >18 Gy was 17.0%, 16.1% and 9.8% for SP, SD and PP. Conclusion: Prone positioning of patient for large pendulous breast irradiation enables improving dose uniformity with minimal heart and lung doses.

• Radiation Oncology Journal
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• v.21 no.1
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• pp.100-106
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• 2003

Purpose : To develop a patients' setup verification tool (PSVT) to verify the alignment of the machine and the target isocenters, and the reproduclbility of patients' setup for three dimensional conformal radiotherapy (3DCRT) and intensity modulated radiotherapy (IMRT). The utilization of this system is evaluated through phantom and patient case studies. Materials and methods : We developed and clinically tested a new method for patients' setup verification, using digitally reconstructed radiography (DRR), simulation, porial and digital images. The PSVT system was networked to a Pentium PC for the transmission of the acquired images to the PC for analysis. To verify the alignment of the machine and target isocenters, orthogonal pairs of simulation images were used as verification images. Errors in the isocenter alignment were measured by comparing the verification images with DRR of CT Images. Orthogonal films were taken of all the patients once a week. These verification films were compared with the DRR were used for the treatment setup. By performing this procedure every treatment, using humanoid phantom and patient cases, the errors of localization can be analyzed, with adjustments made from the translation. The reproducibility of the patients' setup was verified using portal and digital images. Results : The PSVT system was developed to verify the alignment of the machine and the target isocenters, and the reproducibility of the patients' setup for 3DCRT and IMRT. The results show that the localization errors are 0.8$\pm$0.2 mm (AP) and 1.0$\pm$0.3 mm (Lateral) in the cases relating to the brain and 1.1$\pm$0.5 mm (AP) and 1.0$\pm$0.6 mm (Lateral) in the cases relating to the pelvis. The reproducibility of the patients' setup was verified by visualization, using real-time image acquisition, leading to the practical utilization of our software Conclusions : A PSVT system was developed for the verification of the alignment between machine and the target isocenters, and the reproduclbility of the patients' setup in 3DCRT and IMRT. With adjustment of the completed GUI-based algorithm, and a good quality DRR image, our software may be used for clinical applications.

• The Korean Journal of Nuclear Medicine Technology
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• v.12 no.3
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• pp.229-234
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• 2008

Hepatobiliary scintigraphy is very sensitivity of hepatic cell and gallbladder, biliary track atresia and biliary leakage. however, Hepatobiliary scan of biliary leakage diagnosis was separated determine biliary leakage and bowl drainage bile-juice. The object of this study will determine biliary leakage and bowl drainage bile-juice to hepatobiliary scintigraphy both decubitus position in bile leakage patients. Material & Methode: 31 patients (meal 14, Femeal 17), $51.1{\pm}14.4$ years. dynamic scan acquisition 60 farme for 60 minute on supine position. and delay scan was 2 hrs, 4 hrs, 24 hrs for 5 minute on supine, both decubitus position. Both decubitus position scan was kept for 5 minutes. Efficient of Hepatobiliary Scintigraphy both decubitus position in bile leakage patients was compared leakage size, density, image of supine position and both decubitus position. Results: 23 patients for 31 bile leakage patients was checked up function image or delay image, and 8 patients was checked up bile leakage on both decubitus. anatomical leakage location was supine position very well, but both decubitus position was separated bile leakage and moving bile-juice in bowl. also, uptake (counts/pixel) average of roi and bkg was supine 5.02, left decubitus 2.08, right decubitus 2.68. No. pixels of supine ROI counted 1.91 times than left decubitus, 1.05 times than right decubitus. Conclusion: 31 patient both decubitus position, but decubitus position was separated bile juice movement in bowl leakage location. also, It was compared ROI/BKG ratio and ROI No. pixels of supine, both decubitus in 38.5% patients. And No. pixels of supine position was large 19%, 5% than left decubitus, right decubitus, And density was in low 60%, 50% than left decubitus, right decubitus. It was mean bile leakage of ROI. so, If Hepatobiliary Scintigraphy was additional both decubitus position scan in bile leakage patients, this study will be more valuable in diagnosis of bile leakage.

• Journal of the Korean Society of Radiology
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• v.16 no.3
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• pp.319-325
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• 2022

The Study In order to obtain a sharpness Image from Skull PA axial projection (Haas) in a head axial X-ray Examination, this study changed the posture angle using Skull Phantom and evaluated the image subjectively to 5 radiologists who worked in the Department of Imaging at University Hospital. In the prone position, the head was lowered 4 cm from the back of the head, entered 25° toward the head, and the image evaluation score was high with 20 points, such as the back bone, dorsum sellae projected in the large hole, and posterior clinoid process. In addition, the score significance was verified, and the Cronbach Alpha value was evaluated to have good reliability of 0.789. As a result of calculating the signal-to-noise ratio (SNR) by setting the region of interest (ROI) of the image, it was the highest at 5.957 for 25° incident at the back of the head and 6.430 for 30° incident at the back of the head. As a result of the study, in order to obtain a sharp image of the back of the head bone, dorsum sellae, and posterior clinoid process when shooting in the axial direction after the head, it is filmed by tilting 25° toward the head from 4 cm below the back of the head. In order to obtain a sharp image of rock pyramid symmetry, petrous ridge, sagittal suture, and lambdoid suture, it is thought that it will be helpful for clinical use if you shoot it 8cm down from the back of the head and tilt it 30° toward the head.